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LEEDS, Ala. -- IndyCar and Barber Motorsports Park have signed a three-year extension that will keep the IZOD IndyCar Series racing at the Alabama road course through 2016.

ZOOM Motorsports, which promotes the race, and IndyCar officials announced the extension before the start of Sunday's Honda Indy Grand Prix of Alabama.

"IndyCar has become very popular here, and we look forward to continuing to grow the prominence of this race," said Gene Hallman, president and CEO of ZOOM. "We certainly feel that IndyCar is the appropriate partner to assist us in showcasing what is considered to be the finest road-course facility in the U.S."

Sunday's race was the fourth IndyCar event at the 2.38-mile course east of Birmingham.